EP0498586A1 - Prothèse d'articulation du genou - Google Patents

Prothèse d'articulation du genou Download PDF

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Publication number
EP0498586A1
EP0498586A1 EP92300878A EP92300878A EP0498586A1 EP 0498586 A1 EP0498586 A1 EP 0498586A1 EP 92300878 A EP92300878 A EP 92300878A EP 92300878 A EP92300878 A EP 92300878A EP 0498586 A1 EP0498586 A1 EP 0498586A1
Authority
EP
European Patent Office
Prior art keywords
anterior
component
tibial
plastics
femoral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92300878A
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German (de)
English (en)
Other versions
EP0498586B1 (fr
Inventor
Peter Stanley Walker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP94112332A priority Critical patent/EP0626156B1/fr
Publication of EP0498586A1 publication Critical patent/EP0498586A1/fr
Application granted granted Critical
Publication of EP0498586B1 publication Critical patent/EP0498586B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees
    • A61F2/3868—Joints for elbows or knees with sliding tibial bearing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • A61F2002/30398—Sliding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements

Definitions

  • the present invention provides two approaches to a solution of this dilemma.
  • First, it provides a femoral component which alters the sagittal radius and which has continuous contact surfaces for the tibial surface and also, preferably, with the patella surface.
  • the invention relates to a sliding bearing type of prosthesis where guide tracks for the tibial bearing surface are curved in the sagittal plane to provide the necessary stability, as well as freedom for translational motion in the anterior-posterior direction.
  • the above two broad concepts may be combined in a single prosthesis or employed individually depending on the requirements of a particular case.
  • the invention also includes variations of the above concepts and various designs of tibial components.
  • the tibial bearing surface when viewed in one or more sagittal sections, has a radius of curvature which substantially corresponds with the radius of the bearing surface of the femoral component.
  • the profiles of the sagittal sections may be slightly smaller than the radii of the corresponding sections of the tibial bearing surface, so as to allow sufficient clearance for taking up differences in surgical placement of the two components of the prosthesis, and allowing adequate laxity for normal functions.
  • the femoral component portion which encases the resected condyles may be formed with a slot to permit passage of the ligaments.
  • the femoral component may be continued in the distal/posterior region across the full width, i.e in the lateral-medial direction.
  • the extent to which the constant radius of the femoral component in sagittal planes extends around the distalmost point is the amount sufficient to give the desired degree of flexion of the joint.
  • Conformity of the femoral and tibial bearing surfaces during all stages of flexion gives increased contact area between the metal and plastic bearing surfaces, leading to reduced wear and deformation. Also, as the sagittal curvature of the tibial component is upwardly concave, the up-sweep of the tibial bearing surface posteriorly and anteriorly gives increased stability in anterior-posterior, medial-lateral and internal-external rotations. Close contact between the patella (whether natural or artificial) with the patella groove during all stages of flexion also contributes to greater stability of the joint.
  • the cylindrical bearing surface between the plastics component and the metal platform viewed in a sagittal plane constrains the movement in the anterior-posterior direction. Also, the upwardly curved interface between the plastics component and the metal platform introduces increasing constraint due to gravity forces as the plastics bearing component displaces further away from its central position.
  • the knee displays both laxity (which can be termed freedom of motion) and stability, which is the control of displacements and rotations to within acceptable limits.
  • Laxity can include linear or rotational translation in any of the three mutually perpendicular coordinate axes.
  • laxity is only considered in anterior-posterior displacement, medial-lateral displacement and internal-external rotation, these being the most significant.
  • the anterior-posterior stability is provided mainly by the cruciate ligaments.
  • the anterior cruciate 5 can be seen in Figure 1, especially at the higher flexion angles.
  • Rotational stability is provided by a combination of the cruciate and collateral ligaments.
  • the muscles also play an important role in providing stability.
  • the joint surfaces contribute to stability as force is applied across the joint, due to the slight dishing of the surfaces and the deformability of the articular cartilage.
  • the laxity is due to the elastic extensibility of the ligaments, the joint surfaces, and other soft tissues surrounding the joint.
  • a femoral component 20 is attached to the end of the femur and a tibial component 21 to the upper part of the tibia.
  • the ends of the femoral condyles are resected and shaped to receive the femoral component and held in place with bone cement and/or pegs extending into the condyles.
  • the collateral and cruciate ligaments can be preserved by providing a slot 22 in the femoral component, although in most designs, either the anterior is resected, or both cruciates are resected.
  • FIG. 3(a) A typical femoral component in accordance with the invention is shown in Figure 3(a).
  • the condylar surfaces 31 resemble the anatomical, especially in the sagittal view, and there is a cut-out or slot 32 for one or both cruciate ligaments.
  • a patella groove 33 is continuous down to the cut-out 32 after which it splits.
  • the larger femoral component in Figure 3(b) now has continuous surfaces throughout, including the patella groove, but is otherwise the same. Such a configuration requires resection of both cruciate ligaments.
  • the femoral shape is then used to computer-generate a tibial surface 35, based on input laxity requirements in anterior-posterior displacement and internal-external rotation.
  • FIG. 5 An improvement to the patello-femoral contact is apparent from Figure 5.
  • the normal dome-shape (Figure 5(a)) has high conformity when seen in the overhead view ( Figure 6), but low conformity in the sagittal view.
  • Figure 5(b) and 5(c) Several experimental and theoretical studies has shown that the angle through which the patella rotates relative to the femoral component in the sagittal plane is within 10 degrees ( Figure 5(b) and 5(c)). This means that a high degree of conformity can be desired into the patella with no loss in freedom of motion.
  • the new sagittal profile of the patella is shown dotted in figure 5(d).
  • the above design form in accordance with the invention is most suitable when the anterior and posterior cruciate ligaments are resected.
  • anterior-posterior laxity approximately 5 mm total
  • rotational laxity (+ - 12 degrees
  • Such laxity will also be sufficient for activities of everyday living.
  • the disadvantage is that the components are relied upon for stability, and in the long run, this may lead to problems with the fixation of the components to the bone.
  • resection of the cruciates is believed to reduce the proprioceptive response of the knee with consequent compensatory gait patterns.
  • a further disadvantage is that extremes of motion which occur during more demanding activities may be restricted, a possible disadvantage to younger or active patients.
  • One further improvement provided by the present invention is to provide for sufficient anterior-posterior and rotational stability so that the prosthesis can be used with or without the cruciate ligaments, and to provide complete femoral-tibial conformity throughout the entire range of flexion.
  • it consists of making the polished metal platform for supporting the plastic bearing piece or pieces concave when seen in the sagittal view. The effect will be to offer steadily increasing resistance to displacement away from the neutral position.
  • the stability and laxity characteristics can be made similar to that of a normal knee, or to a usual type of condylar prosthesis.
  • Figure 7(a) shows the overall arrangement seen in plan view, with a metal plate or platform 71, for attachment to the tibia, having a polished cylindrical surface on the top of the plate and a plastic bearing component 72 which slides on the polished surface.
  • the femoral condylar surfaces are intended to have a constant sagittal radius in the region which articulates against the plastic surface, and conform closely with the tibial surface in both frontal and sagittal planes.
  • An important feature is that the radius of the plastic surface is smaller than that of the cylindrical surface.
  • the cylindrical shape of the bearing surfaces is shown in Figure 7(b) in which R2 is greater than R2.
  • Figure 7(c) shows the medial-lateral section and a central fixation peg 73 and anti-rotation pegs 74 to prevent the platform 71 rotating on the tibia.
  • FIG. 8(a) and 8(b) The metal platform 81 supports a plastics bearing component 81 which is guided for anterior-posterior motion on a rail 83 fixed or integral with the platform 81.
  • the platform may be curved in the sagittal plane as shown in Figure 7(b) or be planar.
  • anterior-posterior motion may be convenient to constrain anterior-posterior motion within limits by providing suitable stops, e.g by means of an upstanding post 84 secured to the platform and an elongated hole 85 in the bearing pad 82.
  • the pad 82 may move freely in an anterior-posterior direction into the post 84 abutting one of the ends of the elongated hole.
  • An alternative method of providing stops is indicated in dotted lines in Figure 8(a) in which the recess in the plastics meniscus component 82 has a wall 86 against which the end face of the rail 83 abuts to limit the anterior-posterior movement in one direction.
  • Separate plastics pads 91,92 are an alternative arrangement supported on a common metal platform 93.
  • Linear guidance is achieved by a metal rail 94, leaving a small clearance between the pads and the rail.
  • the bearing surface between the platform and the pads may be curved or planar.
  • both anterior-posterior translation and internal-external rotation are possible.
  • only 0.8 mm inwards motion per side is needed to accommodate up to about + - 15 degrees of rotation.
  • FIG. 10 is a view similar to Figure 7(c).
  • a tibial bearing pad 101 is supported for sliding anterior-posterior motion on platform 103
  • the pad 101 is trapped and guided by rail 102 having a 'T'-shaped profile section
  • Figure 10 also shows an alternative trapping and guidance means by lateral guides 104 having inwardly turned projections 105 which engage in slots in the plastics pad.
  • a central guide rail is preferred since this is less prone to jamming.
  • the femoral components and tibial metal platform are made from a metal acceptable for use for implantation in the human body.
  • a metal acceptable for use for implantation in the human body examples are cobalt-chromium and titanium alloys and stainless steels.
  • the artificial patella (where present) and/or the plastics bearing components may be made from any biocompatible material capable of withstanding the imposed loads and providing appropriate bearing properties when in contact with a polished metal surface.
  • the plastics material should exhibit low friction properties under these conditions.
  • suitable materials are ultra-high molecular weight polyethylene or acetal copolymers.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Steroid Compounds (AREA)
EP92300878A 1991-02-04 1992-01-31 Prothèse d'articulation du genou Expired - Lifetime EP0498586B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94112332A EP0626156B1 (fr) 1991-02-04 1992-01-31 Prothèse de genou

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919102348A GB9102348D0 (en) 1991-02-04 1991-02-04 Prosthesis for knee replacement
GB9102348 1991-02-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP94112332.5 Division-Into 1992-01-31

Publications (2)

Publication Number Publication Date
EP0498586A1 true EP0498586A1 (fr) 1992-08-12
EP0498586B1 EP0498586B1 (fr) 1997-01-08

Family

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EP92300878A Expired - Lifetime EP0498586B1 (fr) 1991-02-04 1992-01-31 Prothèse d'articulation du genou
EP94112332A Expired - Lifetime EP0626156B1 (fr) 1991-02-04 1992-01-31 Prothèse de genou

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP94112332A Expired - Lifetime EP0626156B1 (fr) 1991-02-04 1992-01-31 Prothèse de genou

Country Status (6)

Country Link
US (1) US5330533A (fr)
EP (2) EP0498586B1 (fr)
AT (2) ATE147252T1 (fr)
DE (2) DE69216437T2 (fr)
ES (2) ES2105441T3 (fr)
GB (1) GB9102348D0 (fr)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546726A1 (fr) * 1991-11-28 1993-06-16 Biomet Limited Prothèse d'articulation du genou
WO1993011720A1 (fr) * 1991-12-11 1993-06-24 Theusner, Joachim Articulation artificielle
FR2699399A1 (fr) * 1992-12-17 1994-06-24 Luer Sa Prothèse du genou bicompartimentale.
US5326358A (en) * 1991-08-28 1994-07-05 Sulzer Medizinaltechnik Ag Knee joint prosthesis
DE4310968A1 (de) * 1993-04-03 1994-10-06 Kubein Meesenburg Dietmar Künstliches Gelenk zum Ersatz der menschlichen Kniescheibe
US5358530A (en) * 1993-03-29 1994-10-25 Zimmer, Inc. Mobile bearing knee
WO1994026212A1 (fr) * 1993-05-18 1994-11-24 Walker Peter S Prothese de genou a conformite femorale et tibiale
EP0634156A2 (fr) * 1993-07-16 1995-01-18 Peter Stanley Walker Prothèse de remplacement du genou
GB2280375A (en) * 1993-07-16 1995-02-01 Walker Peter S Prosthesis for knee replacement
WO1995014444A1 (fr) * 1993-11-23 1995-06-01 Plus Endoprothetik Ag Systeme permettant de realiser une endoprothese pour l'articulation du genou
WO1995017860A1 (fr) * 1993-12-30 1995-07-06 Plus Endoprothetik Ag Endoprothese d'articulation du genou
FR2714819A1 (fr) * 1994-01-10 1995-07-13 Billy Jean Louis Prothèse de genou.
FR2726174A1 (fr) * 1994-10-26 1996-05-03 Cornic Michel Prothese d'articulation du genou
WO1997000053A1 (fr) * 1995-06-14 1997-01-03 Theusner, Joachim Articulation artificielle, notamment endoprothese de remplacement d'articulations naturelles
US5609639A (en) * 1991-02-04 1997-03-11 Walker; Peter S. Prosthesis for knee replacement
US5871541A (en) * 1993-11-23 1999-02-16 Plus Endoprothetik, Ag System for producing a knee-joint endoprosthesis
DE19823325C1 (de) * 1998-05-26 2000-03-23 Werner Scholz Kniegelenk-Endoprothesensystem
US6123728A (en) * 1997-09-17 2000-09-26 Smith & Nephew, Inc. Mobile bearing knee prosthesis
US6210444B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6210445B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6217618B1 (en) 1999-10-26 2001-04-17 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6319283B1 (en) 1999-07-02 2001-11-20 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6428577B1 (en) 1998-05-20 2002-08-06 Smith & Nephew, Inc. Mobile bearing knee prosthesis
US6660039B1 (en) 1998-05-20 2003-12-09 Smith & Nephew, Inc. Mobile bearing knee prosthesis
EP1525862A2 (fr) * 2003-10-21 2005-04-27 Königsee Implantate und Instrumente zur Ostheosynthese GmbH Plaque de base tibiale pour une endoprothèse de genou.
DE102004037877A1 (de) * 2004-08-04 2006-02-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Prothesenvorrichtung, insbesondere Fußprothese
US7422605B2 (en) 2003-07-17 2008-09-09 Exactech, Inc. Mobile bearing knee prosthesis
US7708782B2 (en) 2003-07-17 2010-05-04 Exactech, Inc. Mobile bearing knee prosthesis
US8308808B2 (en) 2010-02-19 2012-11-13 Biomet Manufacturing Corp. Latent mobile bearing for prosthetic device

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US6695848B2 (en) 1994-09-02 2004-02-24 Hudson Surgical Design, Inc. Methods for femoral and tibial resection
US8603095B2 (en) 1994-09-02 2013-12-10 Puget Bio Ventures LLC Apparatuses for femoral and tibial resection
US5683468A (en) * 1995-03-13 1997-11-04 Pappas; Michael J. Mobile bearing total joint replacement
US5702465A (en) * 1996-05-13 1997-12-30 Sulzer Orthopedics Inc. Patella prosthesis having rotational and translational freedom
US5824100A (en) * 1996-10-30 1998-10-20 Osteonics Corp. Knee prosthesis with increased balance and reduced bearing stress
US7468075B2 (en) 2001-05-25 2008-12-23 Conformis, Inc. Methods and compositions for articular repair
US8480754B2 (en) 2001-05-25 2013-07-09 Conformis, Inc. Patient-adapted and improved articular implants, designs and related guide tools
US9603711B2 (en) 2001-05-25 2017-03-28 Conformis, Inc. Patient-adapted and improved articular implants, designs and related guide tools
US8083745B2 (en) 2001-05-25 2011-12-27 Conformis, Inc. Surgical tools for arthroplasty
US8771365B2 (en) 2009-02-25 2014-07-08 Conformis, Inc. Patient-adapted and improved orthopedic implants, designs, and related tools
US8882847B2 (en) 2001-05-25 2014-11-11 Conformis, Inc. Patient selectable knee joint arthroplasty devices
US7534263B2 (en) 2001-05-25 2009-05-19 Conformis, Inc. Surgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty
US8556983B2 (en) 2001-05-25 2013-10-15 Conformis, Inc. Patient-adapted and improved orthopedic implants, designs and related tools
US7618451B2 (en) 2001-05-25 2009-11-17 Conformis, Inc. Patient selectable joint arthroplasty devices and surgical tools facilitating increased accuracy, speed and simplicity in performing total and partial joint arthroplasty
US8735773B2 (en) 2007-02-14 2014-05-27 Conformis, Inc. Implant device and method for manufacture
US8545569B2 (en) 2001-05-25 2013-10-01 Conformis, Inc. Patient selectable knee arthroplasty devices
US8234097B2 (en) 2001-05-25 2012-07-31 Conformis, Inc. Automated systems for manufacturing patient-specific orthopedic implants and instrumentation
US6039764A (en) * 1997-08-18 2000-03-21 Arch Development Corporation Prosthetic knee with adjusted center of internal/external rotation
US5951603A (en) * 1997-09-25 1999-09-14 Johnson & Johnson Professional, Inc. Rotatable joint prosthesis with axial securement
US6053945A (en) * 1997-09-25 2000-04-25 Johnson & Johnson Professional, Inc. Joint prosthesis having controlled rotation
US6010534A (en) * 1997-09-25 2000-01-04 Johnson & Johnson Professional, Inc. Rotatable tibial prosthesis with keyed axial securement
US5957979A (en) * 1997-12-12 1999-09-28 Bristol-Myers Squibb Company Mobile bearing knee with metal on metal interface
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US7239908B1 (en) 1998-09-14 2007-07-03 The Board Of Trustees Of The Leland Stanford Junior University Assessing the condition of a joint and devising treatment
CA2354525A1 (fr) 1998-09-14 2000-06-22 Stanford University Estimation de l'etat d'une articulation et prevention de lesions
US6306171B1 (en) 1998-12-09 2001-10-23 Iowa State University Research Foundation, Inc. Total elbow arthroplasty system
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US6165223A (en) * 1999-03-01 2000-12-26 Biomet, Inc. Floating bearing knee joint prosthesis with a fixed tibial post
US6972039B2 (en) 1999-03-01 2005-12-06 Biomet, Inc. Floating bearing knee joint prosthesis with a fixed tibial post
US8066776B2 (en) * 2001-12-14 2011-11-29 Btg International Limited Tibial component
FR2796836B1 (fr) * 1999-07-26 2002-03-22 Michel Bercovy Nouvelle prothese du genou
US20030208280A1 (en) * 2000-04-21 2003-11-06 Behrooz Tohidi Wear resistant artificial joint
CA2425120A1 (fr) 2000-09-14 2002-03-21 The Board Of Trustees Of The Leland Stanford Junior University Evaluation de l'etat d'une articulation et traitement afferent
ATE413135T1 (de) 2000-09-14 2008-11-15 Univ Leland Stanford Junior Beurteilung des zustandes eines gelenkes und des verlustes von knorpelgewebe
US6558426B1 (en) 2000-11-28 2003-05-06 Medidea, Llc Multiple-cam, posterior-stabilized knee prosthesis
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US8439926B2 (en) 2001-05-25 2013-05-14 Conformis, Inc. Patient selectable joint arthroplasty devices and surgical tools
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US6994727B2 (en) * 2002-12-17 2006-02-07 Amedica Corporation Total disc implant
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US5609639A (en) * 1991-02-04 1997-03-11 Walker; Peter S. Prosthesis for knee replacement
US5326358A (en) * 1991-08-28 1994-07-05 Sulzer Medizinaltechnik Ag Knee joint prosthesis
EP0546726A1 (fr) * 1991-11-28 1993-06-16 Biomet Limited Prothèse d'articulation du genou
WO1993011720A1 (fr) * 1991-12-11 1993-06-24 Theusner, Joachim Articulation artificielle
US5556432A (en) * 1991-12-11 1996-09-17 Joachim Theusner Artificial joint
FR2699399A1 (fr) * 1992-12-17 1994-06-24 Luer Sa Prothèse du genou bicompartimentale.
US5358530A (en) * 1993-03-29 1994-10-25 Zimmer, Inc. Mobile bearing knee
US5738686A (en) * 1993-04-03 1998-04-14 Joachim Theusner Artificial joint to replace the human patella
DE4310968A1 (de) * 1993-04-03 1994-10-06 Kubein Meesenburg Dietmar Künstliches Gelenk zum Ersatz der menschlichen Kniescheibe
WO1994026212A1 (fr) * 1993-05-18 1994-11-24 Walker Peter S Prothese de genou a conformite femorale et tibiale
US5725584A (en) * 1993-05-18 1998-03-10 Walker; Peter Stanley Knee prosthesis with femoral, tibial conformity
AU685804B2 (en) * 1993-05-18 1998-01-29 John Nevil Insall Knee prosthesis with femoral, tibial conformity
GB2280375A (en) * 1993-07-16 1995-02-01 Walker Peter S Prosthesis for knee replacement
EP0634156A3 (fr) * 1993-07-16 1995-04-12 Walker Peter S Prothèse de remplacement du genou.
EP0634155A3 (fr) * 1993-07-16 1995-04-12 Walker Peter S Prothèse de remplacement du genou.
EP0634156A2 (fr) * 1993-07-16 1995-01-18 Peter Stanley Walker Prothèse de remplacement du genou
AU685459B2 (en) * 1993-07-16 1998-01-22 Peter Stanley Walker Prosthesis for knee replacement
GB2280375B (en) * 1993-07-16 1997-09-10 Walker Peter S Prosthesis for knee replacement
WO1995014444A1 (fr) * 1993-11-23 1995-06-01 Plus Endoprothetik Ag Systeme permettant de realiser une endoprothese pour l'articulation du genou
US5871541A (en) * 1993-11-23 1999-02-16 Plus Endoprothetik, Ag System for producing a knee-joint endoprosthesis
WO1995017860A1 (fr) * 1993-12-30 1995-07-06 Plus Endoprothetik Ag Endoprothese d'articulation du genou
US5755802A (en) * 1993-12-30 1998-05-26 Bruno E. Gerber Knee-joint endoprosthesis
EP0670151A3 (fr) * 1994-01-10 1997-12-29 Jean-Louis Billy Prothèse de genou
EP0670151A2 (fr) * 1994-01-10 1995-09-06 Jean-Louis Billy Prothèse de genou
FR2714819A1 (fr) * 1994-01-10 1995-07-13 Billy Jean Louis Prothèse de genou.
FR2726174A1 (fr) * 1994-10-26 1996-05-03 Cornic Michel Prothese d'articulation du genou
WO1996013232A1 (fr) * 1994-10-26 1996-05-09 Aurex Prothese d'articulation du genou
WO1997000053A1 (fr) * 1995-06-14 1997-01-03 Theusner, Joachim Articulation artificielle, notamment endoprothese de remplacement d'articulations naturelles
US6123728A (en) * 1997-09-17 2000-09-26 Smith & Nephew, Inc. Mobile bearing knee prosthesis
US6660039B1 (en) 1998-05-20 2003-12-09 Smith & Nephew, Inc. Mobile bearing knee prosthesis
US6428577B1 (en) 1998-05-20 2002-08-06 Smith & Nephew, Inc. Mobile bearing knee prosthesis
DE19823325C1 (de) * 1998-05-26 2000-03-23 Werner Scholz Kniegelenk-Endoprothesensystem
US6319283B1 (en) 1999-07-02 2001-11-20 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6210445B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6217618B1 (en) 1999-10-26 2001-04-17 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6210444B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US7422605B2 (en) 2003-07-17 2008-09-09 Exactech, Inc. Mobile bearing knee prosthesis
US7708782B2 (en) 2003-07-17 2010-05-04 Exactech, Inc. Mobile bearing knee prosthesis
EP1525862A2 (fr) * 2003-10-21 2005-04-27 Königsee Implantate und Instrumente zur Ostheosynthese GmbH Plaque de base tibiale pour une endoprothèse de genou.
EP1525862A3 (fr) * 2003-10-21 2005-12-28 Königsee Implantate und Instrumente zur Ostheosynthese GmbH Plaque de base tibiale pour une endoprothèse de genou.
DE102004037877A1 (de) * 2004-08-04 2006-02-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Prothesenvorrichtung, insbesondere Fußprothese
DE102004037877B4 (de) * 2004-08-04 2010-04-29 Bauerfeind Ag Fußprothese
US7862621B2 (en) 2004-08-04 2011-01-04 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Prosthesis, in particular prosthetic foot
US8308808B2 (en) 2010-02-19 2012-11-13 Biomet Manufacturing Corp. Latent mobile bearing for prosthetic device
US8986391B2 (en) 2010-02-19 2015-03-24 Biomet Manufacturing, Llc Latent mobile bearing for prosthetic device
US9498341B2 (en) 2010-02-19 2016-11-22 Biomet Manufacturing, Llc Latent mobile bearing for prosthetic device

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DE69216437D1 (de) 1997-02-20
GB9102348D0 (en) 1991-03-20
EP0498586B1 (fr) 1997-01-08
ES2096024T3 (es) 1997-03-01
DE69221162D1 (de) 1997-08-28
EP0626156A2 (fr) 1994-11-30
EP0626156A3 (fr) 1994-12-28
DE69221162T2 (de) 1997-11-27
US5330533A (en) 1994-07-19
ATE147252T1 (de) 1997-01-15
EP0626156B1 (fr) 1997-07-23
DE69216437T2 (de) 1997-04-24
ATE155667T1 (de) 1997-08-15
ES2105441T3 (es) 1997-10-16

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